The signboards should be stably made and mounted as well as withstanding wind loads of up to 90 m/sec, but on the other hand should be able to give way when hit by an aircraft without damaging the aircraft. Operational requirements also demand a moisture- and rainproof design that facilitates service and maintenance.

Electronic and fixed components are fitted in the tracks for the screws. Corner joints use corner angles and glue.

The signboards’ frames consist of aluminium extrusions designed to facilitate assembly as well as internal fastening, component connections and installing electronics. The box can easily be opened giving access for service using a hinge extrusion. The footings and hollow rod mountings were solved by using so-called breakaway connections of aluminium extrusions that consist of a combination of clamp fixtures and pipes with snap locks.

Fixing to the ground uses a so-called breakaway connection of aluminium extrusions that consist of a combination of clamp fixtures and hollow rods with snap locks.

The new Safesign series replaces an earlier variant that was also made of aluminium extrusions. The new design has however reduced the weight by almost half as well as improving performance and features. The various extrusions used in the design also mean shorter manufacturing times and easier installation.